Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Nomeie a liga para as finais de conferência.
 ###Tabelas: CREATE TABLE top_assistants (top_assistants_id AUTO_INCREMENT PRIMARY KEY, Position VARCHAR, Number INT, Player VARCHAR, Super League INT, Champions League INT, Swiss Cup INT, Total INT) CREATE TABLE brazil_national_team (brazil_national_team_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Result VARCHAR, Score VARCHAR, Brazil scorers VARCHAR, Competition VARCHAR) CREATE TABLE past_board_members (past_board_members_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Chairman VARCHAR, Artistic Director VARCHAR, Performance Liaison VARCHAR, Secretary VARCHAR, Business manager VARCHAR, Production Stagemanager VARCHAR, Dramaturge VARCHAR, Public Relations VARCHAR, First/Second Year Rep. VARCHAR, Male Rep. VARCHAR) CREATE TABLE financial_results (financial_results_id AUTO_INCREMENT PRIMARY KEY, Year INT, Turnover VARCHAR, Net income VARCHAR, Balance sheet total VARCHAR, Employees INT) CREATE TABLE year-by-year (year-by-year_id AUTO_INCREMENT PRIMARY KEY, Year INT, Division INT, League VARCHAR, Regular Season VARCHAR, Playoffs VARCHAR, Open Cup VARCHAR)  
SELECT League FROM year-by-year WHERE Playoffs = Conference Finals